scholarly journals Enhancement of artificial magnetism via resonant bianisotropy

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Dmitry Markovich ◽  
Kseniia Baryshnikova ◽  
Alexander Shalin ◽  
Anton Samusev ◽  
Alexander Krasnok ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Materials ◽  
Magnetic Interaction ◽  
High Refractive Index ◽  
Spherical Particles ◽  
Magnetic Response ◽  
Geometrical Arrangement ◽  
Flexible Control ◽  
Illumination Direction ◽  
Displacement Currents

Abstract All-dielectric “magnetic light” nanophotonics based on high refractive index nanoparticles allows controlling magnetic component of light at nanoscale without having high dissipative losses. The artificial magnetic optical response of such nanoparticles originates from circular displacement currents excited inside those structures and strongly depends on geometry and dispersion of optical materials. Here an approach for enhancing of magnetic response via resonant bianisotropy effect is proposed and analyzed. The key mechanism of enhancement is based on electric-magnetic interaction between two electrically and magnetically resonant nanoparticles of all-dielectric dimer. It was shown that proper geometrical arrangement of the dimer in respect to the incident illumination direction allows flexible control over all vectorial components of the magnetic moment, tailoring the latter in the dynamical range of 100% and delivering enhancement up to 36% relative to performances of standalone spherical particles. The proposed approach provides pathways for designs of all-dielectric metamaterials and metasurfaces with strong magnetic responses.

scholarly journals All-dielectric meta-optics and non-linear nanophotonics

2018 ◽  
Vol 5 (2) ◽  
pp. 144-158 ◽  
Author(s):  
Yuri Kivshar
Keyword(s):  
Refractive Index ◽  
High Refractive Index ◽  
Magnetic Response ◽  
New Approach ◽  
New Era ◽  
Optical Metamaterials ◽  
Flexible Control ◽  
Non Linear ◽  
Recent Developments ◽  
Research Frontiers

Abstract Most optical metamaterials fabricated and studied to date employ metallic components resulting in significant losses, heat and overall low efficiencies. A new era of metamaterial physics is associated with all-dielectric meta-optics, which employs electric and magnetic Mie resonances of subwavelength particles with high refractive index for an optically induced magnetic response, thus underpinning a new approach to design and fabricate functional and practical metadevices. Here we review the recent developments in meta-optics and subwavelength dielectric photonics and demonstrate that the Mie resonances can play a crucial role in the realization of the unique functionalities of meta-atoms, also driving novel effects in the fields of metamaterials and nanophotonics. We discuss the recent research frontiers in all-dielectric meta-optics and uncover how Mie resonances can be employed for a flexible control of light with full phase and amplitude engineering, including unidirectional metadevices, highly transparent metasurfaces, non-linear nanophotonics and topological photonics.

scholarly journals Suppression of scattering for small dielectric particles: anapole mode and invisibility

2017 ◽  
Vol 375 (2090) ◽  
pp. 20160069 ◽  
Author(s):  
Boris Luk'yanchuk ◽  
Ramón Paniagua-Domínguez ◽  
Arseniy I. Kuznetsov ◽  
Andrey E. Miroshnichenko ◽  
Yuri S. Kivshar
Keyword(s):  
Refractive Index ◽  
Electric Dipole ◽  
Fano Resonance ◽  
Optical Materials ◽  
High Refractive Index ◽  
Destructive Interference ◽  
Total Scattering ◽  
Dipole Radiation ◽  
New Horizons ◽  
Dielectric Particles

We reveal that an isotropic, homogeneous, subwavelength particle with high refractive index can produce ultra-small total scattering. This effect, which follows from the inhibition of the electric dipole radiation, can be identified as a Fano resonance in the scattering efficiency and is associated with the excitation of an anapole mode in the particle. This anapole mode is non-radiative and emerges from the destructive interference of electric and toroidal dipoles. The invisibility effect could be useful for the design of highly transparent optical materials. This article is part of the themed issue ‘New horizons for nanophotonics’.

Preparation and properties of high refractive index UV-cured titanium hybrid optical materials

2020 ◽  
Vol 265 ◽  
pp. 127466 ◽  
Author(s):  
Xucan Hu ◽  
Bolong Yao ◽  
Jing Liu ◽  
Jiacheng Liu ◽  
Kun Chen ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Materials ◽  
High Refractive Index

PbS/Polymer Nanocomposite Optical Materials with High Refractive Index

2005 ◽  
Vol 17 (9) ◽  
pp. 2448-2454 ◽  
Author(s):  
Changli Lü ◽  
Cheng Guan ◽  
Yifei Liu ◽  
Yuanrong Cheng ◽  
Bai Yang
Keyword(s):  
Refractive Index ◽  
Optical Materials ◽  
Polymer Nanocomposite ◽  
High Refractive Index
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